在高中物理学习中,学生经常对相互作用的物体组成的系统问题感觉束手无策,在解题过程中经常采用隔离法,这种解题方法有时既费力又费时,且由于过程较复杂,方程多很容易出错。我在多年教学中认为用系统牛顿第二定律解相互作用问题时学生较容易理解,且成功率大大提高。 In high school physics study, students often feel helpless to system problems caused by interacting objects. Isolation method is often used in problem solving process. This problem solving method is sometimes laborious and time-consuming. Because the process is complicated and the equation is very complicated Error-prone. In my teaching for many years, I think it is easier for students to understand the problem of interaction with Newton’s second law, and the success rate is greatly improved.